
<!DOCTYPE HTML>
<html>
<head>
    <title>My WebSocket</title>
</head>

<body>
<input id="text" type="text" />
<button onclick="send()">Send</button>
<button onclick="closeWebSocket()">Close</button>
<div id="message"></div>
</body>

<script type="text/javascript">
    var websocket = null;
    //判断当前浏览器是否支持WebSocket, 主要此处要更换为自己的地址
    if ('WebSocket' in window) {
        websocket = new WebSocket("ws://localhost/socket/market/eyJ0eXBlIjoiSldUIiwiYWxnIjoiSFMyNTYifQ.eyJpYXQiOjE2MTc5Mzg2NDAsImV4cCI6MTYxODU0MzM3OCwidXNlcklkIjoiMTciLCJpc3MiOiJsd3MifQ.-ELj4tKU9Di-81F9Z1RfJYkgtLmRo9pmHy39NLZAFk");
    } else {
        alert('Not support websocket')
    }
    //连接发生错误的回调方法
    websocket.onerror = function() {
        setMessageInnerHTML("error");
    };
    //连接成功建立的回调方法
    websocket.onopen = function(event) {
        //setMessageInnerHTML("open");
    }
    //接收到消息的回调方法
    websocket.onmessage = function(event) {
        setMessageInnerHTML(event.data);
    }

    //连接关闭的回调方法
    websocket.onclose = function() {
        setMessageInnerHTML("close");
    }

    //监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，防止连接还没断开就关闭窗口，server端会抛异常。
    window.onbeforeunload = function() {
        websocket.close();
    }

    //将消息显示在网页上
    function setMessageInnerHTML(innerHTML) {
        document.getElementById('message').innerHTML += innerHTML + '<br/>';
    }

    //关闭连接
    function closeWebSocket() {
        websocket.close();
    }

    //发送消息
    function send() {
        var message = document.getElementById('text').value;
        websocket.send(message);
    }
</script>
</html>